39 lines
1.4 KiB
JavaScript
39 lines
1.4 KiB
JavaScript
import fs from 'node:fs'
|
|
|
|
function init(filename) {
|
|
const data = fs.readFileSync(filename, { encoding: 'utf-8' }, data => data)
|
|
const diskmap = [...data.split('')].map((sector, index) => index % 2 === 0 ? ''.padStart(sector, index / 2) : ''.padStart(sector, '.')).join("")
|
|
let reversed_table = [...diskmap].reverse().filter(sector => sector !== '.')
|
|
let new_diskmap = [...diskmap]
|
|
for (let i = 0; i < new_diskmap.length; i++) {
|
|
console.log(new_diskmap.join(""))
|
|
if (new_diskmap[i] === '.') {
|
|
const lastChar = reversed_table.shift()
|
|
const rightMostIndex = new_diskmap.lastIndexOf(lastChar);
|
|
if (rightMostIndex > i) {
|
|
[new_diskmap[i], new_diskmap[rightMostIndex]] = [new_diskmap[rightMostIndex], new_diskmap[i]];
|
|
}
|
|
}
|
|
}
|
|
|
|
/* might be part2 solution */
|
|
//let new_diskmap = table.split('')
|
|
// new_diskmap.map((value, index) => {
|
|
// if (value === '.') {
|
|
// for (let i = index + 1; i < new_diskmap.length; i++) {
|
|
// if (new_diskmap[i] !== '.') {
|
|
// [new_diskmap[index], new_diskmap[i]] = [new_diskmap[i], new_diskmap[index]];
|
|
// break;
|
|
// }
|
|
// }
|
|
// }
|
|
// });
|
|
|
|
let res = 0
|
|
new_diskmap.forEach((value, index) => {
|
|
res += !isNaN(value) ? index * value : 0
|
|
})
|
|
console.log(res)
|
|
}
|
|
|
|
init('example.txt') |